Apple's official nib: 3-in-1 structure. double-layer design of the main body, the inner layer is made of ABS material, and the outer layer is made of TPU soft material | Stylus Nib outer layer is made of TPU soft material with 2 softnesses: The softness of 2B is 90°-95°, which is closer to the effect of writing on paper; HB softness is 115°-120°, and writing is smoother | Only the official nib uses the TPU soft outer layer, which will not scratch the screen and is more durable.(Other brands use a single plastic, the hardness is about 220°)